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Other Comprehensive Income - Schedule of Components of Other Comprehensive Income and Related Tax Effects (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Total other comprehensive income (loss) | $ 6,442 | $ (52,126) | $ (15,468)
AOCI, Gain (Loss), Debt Securities, Available-for-Sale, without Allowance for Credit Loss |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Before reclassifications | 7,785 | (67,167) | (19,526)
Reclassifications | (52) | (651) | (783)
Net unrealized gains (losses) | 7,733 | (67,818) | (20,309)
Tax effect | (1,624) | 14,242 | 4,265
Total other comprehensive income (loss) | 6,109 | (53,576) | (16,044)
AOCI, Gain (Loss), Debt Securities, Available-for-Sale, with Allowance for Credit Loss |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Net unrealized gains (losses) | 748 | 1,107 | 0
Tax effect | (157) | (232) | 0
Total other comprehensive income (loss) | 591 | 875 | 0
Unrealized gains (losses) on postretirement benefits plan |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Before reclassifications | (2) | 303 | 391
Reclassifications | (174) | (113) | (43)
Net unrealized gains (losses) | (176) | 190 | 348
Tax effect | 37 | (40) | (73)
Total other comprehensive income (loss) | (139) | 150 | 275
Unrealized gains (losses) on interest rate swap |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Before reclassifications | 0 | 411 | 105
Reclassifications | (151) | 127 | 276
Net unrealized gains (losses) | (151) | 538 | 381
Tax effect | 32 | (113) | (80)
Total other comprehensive income (loss) | $ (119) | $ 425 | $ 301

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